The Cons There are also some negative factors to using a dry sump lube system, as well. The main drawback is that there is heavier weight involved with the use of a dry sump. There are also extra costs with dry sump lubrication systems, associated with having to buy an extra tank and an extra pump. Overall, a dry sump oil system is a bit more complicated than with a traditional wet sump oil system. Z06 Dry Sump The LS7 7.0-liter/427-cubic-inch Gen IV V-8 that was initiated with the 2006 Corvette Z06 utilizes a dry sump lubrication system. Friction Is The Enemy (1) On top, are two unlubricated surfaces moving roughly past each other, slowed by friction. They may look smooth from a distance, but they're rough at the atomic level and one surface drags against the other, wasting energy and wearing out the materials. (2) At the bottom, you can see how a lubricant helps in two different ways: it smooths and cushions the bumps between the two surfaces. and, because it's a liquid, it can easily change shape and flow. Ideally, it will flow in perfect layers, as shown here, in what's known as laminar flow. The layer of lubricant near the top surface will move toward the left while the layer near the bottom surface will move toward the right. The layers will slide freely past one another and, in so doing, help to reduce friction.